The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging

This prospective and retrospective study was undertaken to investigate the effect of filtering on image quality and functional parameters in myocardial SPECT using various reconstruction filters and their associated parameters. In the image quality study (a prospective study), a cardiac phantom syst...

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主要作者:	Yusoff, Muhammad Nur Salihin
格式:	Thesis
語言:	English
出版:	2010
主題:	R5-130.5 General works
在線閱讀:	http://eprints.usm.my/43032/1/Muhammad_Nur_Salihin_Bin_Yusoff24.pdf
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id	my-usm-ep.43032
record_format	uketd_dc
spelling	my-usm-ep.430322019-04-12T05:26:52Z The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging 2010-06 Yusoff, Muhammad Nur Salihin R5-130.5 General works This prospective and retrospective study was undertaken to investigate the effect of filtering on image quality and functional parameters in myocardial SPECT using various reconstruction filters and their associated parameters. In the image quality study (a prospective study), a cardiac phantom system (with 1.10 cm cold defect in myocardium) for different 99mTc radioactivity concentration as background was used in the SPECT procedure. The target-background concentration ratio (T/B) of 5.3, 4.0, 3.3, 2.7, 2.0, 1.3, and 1.0 were used to acquire SPECT images. Based on the SPECT studies, the calculated background count to target count ratio (BTR) for each T/B was 0.2, 0.4, 0.6, 0.7, 0.8, and 0.9 respectively (T/B = 1.0 was excluded). The image quality was analyzed based on image contrast, signal-to-noise ratio (SNR), defect size accuracy, and total grade (trade-off between contrast, SNR, and defect size accuracy). The results showed that, different filters produce different values of contrast, SNR, and defect size. The increase in cut off frequency and order of filter resulted in the increase in contrast and SNR, but the accuracy of defect size was reduced. Butterworth filter has the ability to balance between contrast, SNR, and defect size accuracy while Gaussian filter is good in producing image with high contrast and SNR. 2010-06 Thesis http://eprints.usm.my/43032/ http://eprints.usm.my/43032/1/Muhammad_Nur_Salihin_Bin_Yusoff24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kesihatan
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	R5-130.5 General works
spellingShingle	R5-130.5 General works Yusoff, Muhammad Nur Salihin The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging
description	This prospective and retrospective study was undertaken to investigate the effect of filtering on image quality and functional parameters in myocardial SPECT using various reconstruction filters and their associated parameters. In the image quality study (a prospective study), a cardiac phantom system (with 1.10 cm cold defect in myocardium) for different 99mTc radioactivity concentration as background was used in the SPECT procedure. The target-background concentration ratio (T/B) of 5.3, 4.0, 3.3, 2.7, 2.0, 1.3, and 1.0 were used to acquire SPECT images. Based on the SPECT studies, the calculated background count to target count ratio (BTR) for each T/B was 0.2, 0.4, 0.6, 0.7, 0.8, and 0.9 respectively (T/B = 1.0 was excluded). The image quality was analyzed based on image contrast, signal-to-noise ratio (SNR), defect size accuracy, and total grade (trade-off between contrast, SNR, and defect size accuracy). The results showed that, different filters produce different values of contrast, SNR, and defect size. The increase in cut off frequency and order of filter resulted in the increase in contrast and SNR, but the accuracy of defect size was reduced. Butterworth filter has the ability to balance between contrast, SNR, and defect size accuracy while Gaussian filter is good in producing image with high contrast and SNR.
format	Thesis
qualification_level	Master's degree
author	Yusoff, Muhammad Nur Salihin
author_facet	Yusoff, Muhammad Nur Salihin
author_sort	Yusoff, Muhammad Nur Salihin
title	The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging
title_short	The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging
title_full	The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging
title_fullStr	The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging
title_full_unstemmed	The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging
title_sort	impact of reconstruction filters on 99mtc myocardial spect imaging
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kesihatan
publishDate	2010
url	http://eprints.usm.my/43032/1/Muhammad_Nur_Salihin_Bin_Yusoff24.pdf
_version_	1747821151598411776

The Impact Of Reconstruction Filters On 99mtc Myocardial Spect Imaging

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